Site Plan and Subsurface Gas Storage

siteplan2
Consented development (Please click on the thumbnail to view the image.)

We plan to redevelop the existing site. There will be a new remote well site for up to six wells and 1.2km high pressure flow line to the main site.

There will be a 4.4k pipeline (24” in diameter) that leads to an above ground installation (there will be an underground connection point).
The proposed development comprises:

  • The construction of a well-site and the drilling of six boreholes to access an identified underground gas-bearing geological structure
  • The construction of a connection facility into the National Transmission System (NTS) together with associated inter-connecting pipelines.

The purposes of the four elements of the project are to:

  • Drill up to six additional wells into the reservoir to realise optimum storage potential
  • Provide above ground processing and compression equipment to handle gas re-injection and production, water extraction from the produced gas and metering of the imported and exported gas
  • Provide a high pressure gas pipeline connection to the NTS to import and export retrieved and stored gas
  • Provide a connection facility at the point of exit/re-entry from/into the NTS

The gas is injected and extracted as follows:

diagram2

Please click on the thumbnail to view the image.

The gas is stored approximately 1700 metres (circa 5,600 feet) below the surface. To put this into some sort of perspective, the towers on the Humber Bridge consist of a pair of hollow vertical concrete columns, each 155.5 metres (510 ft). Imagine, therefore, standing eleven columns on top of each other and that is the approximate depth of storage!